Senator Okiya Omtatah's office was in the wee hours of Saturday night raided by unknown people.
The raiders ransacked the office in Korinda area, Busia County and made away with computers and other electronics, whose value is yet to be determined.
According to Omtatah's office manager Becker Ogot, the incident happened at around 2am.
"Our office has been broken into by unknown people. They stole a television set, a computer, confidential documents and a flash disk," said Ogot.
"We are preparing an inventory of the items and trying to find out what has been stolen because some small things like flash disks might look like they are not valuable but they contain confidential information."
Ogot urged security agencies to move with speed and bring to book the suspects. He said the incident came when they were assessing and looking into pending bills before they could compile the report and make it public.
Omtatah's landlord, Jacob Ikomero hoped security agencies will arrest those behind the incident.
"They broke into the office through a window at around 2am and managed to get away with electronics before proceeding to a neighbour's house, where they again stole some items," said Ikomero.
Mr Omtatah said he doesn't know the motive behind the raid. "I don't want to speculate for now," he said.
Busia County Commissioner Kipchumba Rutto confirmed the incident and assured locals that the police have launched investigations into the matter.
The Busia senator has been a thorn in the flesh of State officials after he challenged the implementation of the Finance Act, 2023 in court.